Add migration code for old localStorage values.

Finish up the wrapping of localStorage. All background code should now
modify localStorage via settings.js rather than doing it directly.

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/utils.js b/lib/utils.js
index df325138..8aada3a1 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -1,4 +1,12 @@
 var utils = {
+  getCurrentVersion: function() {
+    // Chromium #15242 will make this XHR request to access the manifest unnecessary.
+    var manifestRequest = new XMLHttpRequest();
+    manifestRequest.open("GET", chrome.extension.getURL("manifest.json"), false);
+    manifestRequest.send(null);
+    return JSON.parse(manifestRequest.responseText).version;
+  },
+
   /*
    * Takes a dot-notation object string and call the function
    * that it points to with the correct value for 'this'.